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  <title>Step 2.1: Creating a new protected application</title>
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  <h1>Step 2.1: Creating a new protected application</h1>

  <p>At the first stage we made several simple apps to test the API of the licensing system. Now, on the second stage we'll create just one application. It will also be a console app with the <strong>foo()</strong> function working only in the registered version. Here is the code of our test application:</p>
  <pre class="code">#include &lt;windows.h&gt;
#include &lt;stdio.h&gt;
#include "VMProtectSDK.h"

#define PRINT_HELPER(state, flag) if (state &amp; flag) printf("%s ", #flag)
void print_state(INT state)
{
        if (state == 0)
        {
                printf("state = 0\n");
                return;
        }

        printf("state = ");
        PRINT_HELPER(state, SERIAL_STATE_FLAG_CORRUPTED);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_INVALID);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_BLACKLISTED);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_DATE_EXPIRED);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_RUNNING_TIME_OVER);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_BAD_HWID);
        PRINT_HELPER(state, SERIAL_STATE_FLAG_MAX_BUILD_EXPIRED);
        printf("\n");
}

char *read_serial(const char *fname)
{
        FILE *f;
        if (0 != fopen_s(&amp;f, fname, "rb")) return NULL;
        fseek(f, 0, SEEK_END);
        int s = ftell(f);
        fseek(f, 0, SEEK_SET);
        char *buf = new char[s + 1];
        fread(buf, s, 1, f);
        buf[s] = 0;
        fclose(f);
        return buf;
}

// The foo() method is very short, but we need it to be an individual function
// so we asked the compiler to not compile it inline
__declspec(noinline) void foo()
{
        printf("I'm foo!\n");
}

int main(int argc, char **argv)
{
        char *serial = read_serial("serial.txt");
        int res = VMProtectSetSerialNumber(serial);
        delete [] serial;
        if (res)
        {
                printf("serial number is bad\n");
                print_state(res);
                return 0;
        }
        printf("serial number is correct, calling foo()\n");
        foo();
        printf("done\n");
        return 0;
}
</pre>

  <p>Compile the program without the debug information, but in the linker settings we enable creating of the MAP-file - we will need it to work with VMProtect. After we run the program, we should see the following text:</p>
  <pre class="code">serial number is bad
state = SERIAL_STATE_FLAG_INVALID
</pre>

  <p>Currently, the licensing system still works in the test mode, because the file wasn't processed by VMProtect and doesn't contain a licensing module in it. On the <a href=
  "step22_vmp.htm">next step</a> we will create a VMProtect project and will try to protect our application.</p><br />
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